package com.kuang.gulimall.seckill.scheduled;


import com.kuang.gulimall.seckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * 秒杀商品的定时上架
 * 每天晚上3点；上架最近三天需要秒杀的商品
 * 当天00：00：00-23：59：59
 * 明天
 * 后天
 */

@Slf4j
@Service
public class SeckillSkuScheduled {

    @Autowired
    SeckillService seckillService;

    @Autowired
    RedissonClient redissonClient;

    private final String upload_lock = "seckill:upload:lock";

    @Scheduled(cron = "0 * * * * ?")
    public void uploadSeckillSkuLatest3Days(){
        //1，重复上架无需处理
        log.info("上架秒杀的商品信息...");
        //分布式锁。锁执行完成，状态已经更新完成。释放锁以后。其他人获取到就会拿到最新状态。
        RLock lock = redissonClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS);
        try {
            seckillService.uploadSeckillSkuLatest3Days();
        }finally {
            lock.unlock();
        }

    }
}
